At age forty, a man requires contact lenses (f = 65.0 cm)to read a book held 25.0 cm from his eyes. At age forty-five, he finds that while wearing these contacts he should now hold a book 30.0 cm from his eyes.
1) What is the refractive power of a magnifying glass that has an angular magnification of 6.0 when the image of the stamp is located at the near point?
2) What is the angular magnification when the image of the stamp is 41 cm from the eye?